Chair-seat



UNITED STATES PATENT OFFICE.

RICHARD P. BURKHARDT, OF DAYTON, OHIO.

CHAIR-SEAT.

SPECIFICATION forming part of Letters Patent No. 340,029, dated April 13, 1886.

Application filed February 1, 1886. Serial No. 190,397. (No model.)

To all whom it may concern:

Be it known that I, RICHARD P. BURK- HARDT. a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Chair-Seats, of which the following is a full, clear, and exact; description, reference being had to the accompanyi ngdrawings, forming a part of this specitication.

My invention relates to hat class of chairseats known as "cushioued seats, which are usually provided with springs covered by suitable upholstering.

The object of my invention is to cheapen and simplify the construction of this class ofseats, and to dispense with the usual bottom support for the springs.

The novelty will be herein set forth, and specifically pointed out in the claim.

In the accompanying drawings, Figure 1 is a bottom plan view of my improved seat. Fig. 2 is a sectional side elevation of the same from front to back. Fig. 3 isa bottom plan view illustrating a modification in the construction. Fig. 4 is a diminished plan view representing a further modification.

The same letters of reference are used to indicate identical parts in all the figures.

A represents the usual or any ordinary seatfraine, secured between the side bars of which, close to the front and rear bars, respectively, are two, preferably round, wooden bars, B, whose ends,as shown, are mortised or recessed into the side bar. Upon these bars are secured the double coiled springs 0, whose inner upwardlyprojcctiug ends form loops, as shown, and whose lower ends pass under and engage with the front and rear bars of the seat-frame. If desired, these ends, instead of simply hearing against the under side of the seatframe, may be inserted and secured therein to prevent accidentaldisplacemeutand makea more secure fastening.

The number of springs on each of the bars B is equal, andfor an ordinary chair three for each bar will be found sufiicient, though as many may be used as desired. The loops of the springs, which, as shown in Fig. 2, project up above the level of the seat-frame, are connected in opposite pairs by sheet-metal straps D,which, uuitinp the springs, form a support for the npholstering E, which covers the seat in the usual manner.

Instead of sheet-metal straps D, wire, rope, or twine F, as seen in Fig. 3, may be employed to unite the loops of the springs and form a support for the covering or upliolstering, and, if desired, a cross-strap, G, as seen in Fig. 4, may be employed to connect and steady the straps D.

In this manner I provide an inexpensive spring or cushioned seat for chairs, possessing all the advantages of more expensive cushioned spring-seats, wherein a lower support for the springs is usually provided.

I am aware that it is not new to use double coiled springs for cushioned seats, nor is it new to connect such springs by interlaced straps,as shown in Letters Patent- Nos. 78,705, Reissue 3,664, 89,736, and 102,386, and I do not claim such constructions; but

Having thus fully described my invention, I claim- The combination, withthe seat-frame A, of the bars B B on a level with the frame, and having their ends recessed in the frame,double coiled springs G, whose lower ends engage with the under side of the frame and are supported thereby, and whose upper ends project inwardly to form loops above the level of the top of the frame, the straps D,connecting the opposite pairs of said springsand the covering E, the whole constructed and arranged substantially in the manner and for the purpose specified.

RICHARD P. BURKHARDT. \Vitnesses:

E. W. REoroR, OTTO RICHTER. 

